The application of geodetic surveying time system in APP encryption

doi:10.13474/j.cnki.11-2246.2022.0026

Bulletin of Surveying and Mapping ›› 2022, Vol. 0 ›› Issue (1): 145-148.doi: 10.13474/j.cnki.11-2246.2022.0026

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The application of geodetic surveying time system in APP encryption

LI Cunwen¹, HAO Bo², DENG Xuefeng¹, WANG Ningtao², ZHU Rui¹, WANG Ruyi¹, ZHU Qi¹

1. Surveying and Mapping Engineering Institute of Henan Province, Zhengzhou 450003, China;
2. Zhengzhou Zhixiang Surveying and Mapping Information Technology Co., Ltd., Zhengzhou 450003, China

Received:2021-01-20 Revised:2021-11-23 Published:2022-02-22

Abstract

Abstract: Information security is related to the vital interests of developers and users. How to encrypt software or application program is particularly important. In this paper, a combined encryption method based on MD5 and Julian day is proposed by using geodetic time system. Firstly, the unique ID of APP machine is obtained, and then the validity period of app is calculated by combining Julian day. Secondly, the user name is salted, and finally the information is extracted MD5 algorithm is used to calculate the password, and the specific encryption process is given. This method not only realizes the effective encryption of app, but also can finely control the service life, which greatly protects the rights and interests of developers and users.

Key words: geodetic surveying, time system, MD5, Julian day, APP encryption

CLC Number:

P222

LI Cunwen, HAO Bo, DENG Xuefeng, WANG Ningtao, ZHU Rui, WANG Ruyi, ZHU Qi. The application of geodetic surveying time system in APP encryption[J]. Bulletin of Surveying and Mapping, 2022, 0(1): 145-148.

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The application of geodetic surveying time system in APP encryption

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